{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "One potential mechanism for its activity is the covalent modification of cellular proteins , via a reactive alpha , beta - unsaturated carbonyl group in its cyclopentenone ring , which in turn alters protein function ."}
{"Chemical": ["alpha , beta - unsaturated carbonyl", "cyclopentenone"]}